MOVEMENT: Swiss ETA 2836-2 Automatic CASE DIAMETER: 40mm THICKNESS: 12.5mm DIAL COLOR: Black Dial CASE MATERIAL: Solid Stainless Steel 316L (Lug Holes on Case) BRACELET: Solid Stainless Steel 316L FRONT GLASS: Sapphire BACK GLASS: Solid caseback with Rolex hologram BEZEL: Bi-directional 24 hours bezel (Black/Red) HACK MOVEMENT: Yes CLASP TYPE: Flip lock